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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.232 13 Aug 2026

More OpenTelemetry environment variables passed through

Use it now

Useful3 Signal2

Telemetry Notable

You can now set standard OpenTelemetry compression and per-signal protocol variables and have them respected.

What

The list of environment variables Claude Code recognises now covers OTLP compression and per-signal protocol and temporality settings, so telemetry exporters can be configured with the standard OpenTelemetry names.

Details

Added names include OTEL_EXPORTER_OTLP_COMPRESSION, OTEL_EXPORTER_OTLP_LOGS_COMPRESSION, OTEL_EXPORTER_OTLP_TRACES_COMPRESSION, OTEL_EXPORTER_OTLP_METRICS_TEMPORALITY_PREFERENCE and OTEL_EXPORTER_OTLP_TRACES_PROTOCOL.

Evidence

OTEL_EXPORTER_OTLP_TRACES_COMPRESSION

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.232 →